algebra: OPTIONS
New instructions entered via INSERT are checked by default
(ALGEBRA-SYNTAX-CHECK) on correct syntax as part of a
sequential algebra instruction list, which can in principle
be executed entirely within the ALGEXn routines.
The instruction codes for RETURN, GOTO, ARGUMENT and CALL are
processed at a higher level. Such instruction codes are used
for instance when addressing elements of matrices. These codes
are accepted only if you have set PROCEDURE-SYNTAX-CHECK.
You may change also switch syntax checking off altogether.
By default, exponentials of negative numbers less than -88
are signaled as underflows. Formulae in which they occur are
not evaluated.
To have such exponentials set to 0 and to continue evaluating
the formula, the IGNORE-UNDEFLOW option is used.
When IGNORE-UNDERFLOW is in effect, underflows are not counted.
Keyword index.
Formatted on 10/11/98.